多媒体教学:传统教学的继承和发展   总被引：1，自引：0，他引：1  

胡彩明  王勉 《科技广场》2007,(6):170-171

教学是一门艺术,灵活性很大。如果方法僵化,就是教书匠而不是教师。方法好则事半功倍;方法坏则事倍功半。目前,在各高校的授课中,关于是沿用传统教学方式还是采取多媒体教学方式的争论很多,笔者就此谈谈看法。  相似文献   

Doubly-terminated two-variable lossless ladder networks     

M.O. Ahmad  K.V.V. Murthy  V. Ramachandran 《Journal of The Franklin Institute》1982,314(6):381-392

In this paper necessary and sufficient conditions are derived for a two-variable positive real function to be the driving-point impedance of certain classes of doubly-terminated lossless ladder networks. Specifically, two classes of networks are studied: (a) the class of networks in which the lossless structure is a cascade of p₁- and p₂-variable two-ports, each two-port having its transmission zeros at the origin and/or at infinity; (b) the class of networks in which the lossless structure is a lowpass or highpass ladder network with series arms having p₁- and p₂-type elements in series and shunt arms having the p₁- and p₂-type elements in parallel. It is indicated that via suitable transformations of the variables, conditions for many other types of ladder structures can be derived.  相似文献   

Nonlinear acoustic response of a cylindrical shell     

Jameel Ahmad  H.C. Lee 《Journal of The Franklin Institute》1975,299(3):171-189

A mathematical theory is developed for the nonlinear flexural response of an elastic, infinitely long, thin cylindrical shell submerged in an acoustic medium. The non- linearities examined pertain solely to the elastic field. Application of the theory is displayed in the context of a specific interaction problem. Inadequacies resulting from the use of existing interaction theories which employ a linear shell theory are displayed and critically examined.  相似文献   

Paired values of serum fructosamine and blood glucose for the screening of gestational diabetes mellitus: A retrospective study of 165 Saudi pregnant women     

Haseeb Ahmad Khan  Samia Hasan Sobki  Abdullah Saleh Alhomida  Shaukat Ali Khan 《Indian journal of clinical biochemistry : IJCB》2007,22(1):65-70

This study reports the utilization of serum fructosamine and blood glucose for the screening of gestational diabetes mellitus (GDM). Blood samples from 165 pregnant women were analyzed for fasting blood glucose (FBG), random blood glucose (RBG) and serum fructosamine. The actual fructosamine levels were corrected for serum protein (c-Fruct) for more precise presentation. Two cut-off values of FBG (>5.3 mmol/L and >7.0 mmol/L) and RBG (>7.8 mmol/L and >11.0 mmol/L) were used to classify hyperglycemic subjects for subsequent evaluation. The average values±standard deviations for FBG, RBG and cFruct were 5.865±1.95, 7.767±3.21 and 2.387±0.47 mmol/L, respectively. FBG levels were significantly correlated with RBG (Pearson correlation=0.597, P<0.001). Significant correlations were also observed between cFruct and FBG (Pearson correlation=0.673, P<0.001) or RBG (Pearson correlation=0.641, P<0.001). Out of 165 subjects, 24 (14.5%) cases were classified as hyperglycemic on the basis of FBG>7.0 mmol/L or RBG>11.0 mmol/L; use of lower cut-off values resulted higher frequencies of hyperglycemia. Whereas, a combined criteria of FBG>5.3 mmol/L and cFruct >2.5 mmol/L predicted 35 patients as the most probable hyperglycemic as compared to 32 patients identified using the criteria of RBG >7.8 mmol/L and cFruct >2.5 mmol/L. These criteria were associated with 4.8% and 3.6% false-positivity at the expense of 3.6% and 3.0% false-negative outcomes, respectively. The levels of FBG, RBG and cFruct were significantly higher in hyperglycemic groups (irrespective of grouping criteria) as compared to the respective normal groups. In conclusion, these findings clearly indicate that the paired values of cFruct with FBG or RBG could help in filtering high-risk individuals for OGTT and therefore avoiding a unnecessary OGTT.  相似文献   

谈成人高校外聘教师的管理   总被引：1，自引：0，他引：1  

张勉 《天津职业院校联合学报》2008,10(4)

从成人高等教育的培养目标出发,分析成人高等教育专业设置与社会人才需求的关系,从成人高校自身发展的角度分析外聘教师队伍出现的客观必然性以及外聘教师队伍出现的积极意义,研究外聘教师的来源、作用和特点,结合具体实践,探讨了外聘教师管理中存在的问题、管理方法及解决的对策。  相似文献   

萎叶提取物增强5-氟尿嘧啶对结肠癌细胞HT29和HCT116的生长抑制作用     

Pek Leng NG  ;Nor Fadilah RAJAB  ;Sue Mian THEN  ;Yasmin Anum MOHD YUSOF  ;Wan Zurinah WAN NGAH  ;Kar Yong PIN  ;Mee Lee LOOI 《Journal of Zhejiang University. Science. B》2014,15(8):692-700

研究目的：探讨萎叶（PB）提取物对5-氟尿嘧啶（5-FU）抑制结肠癌细胞HT29和HCT116生长的影响。研究方法：HT29和HCT116细胞分别给予PB、5-FU以及两种药物联合治疗24小时,应用等效线图法分析PB和5-FU的药效学相互作用,AnnexinV／PI染色法检测HT29和HCT116细胞的凋丁L=情况,高效液相色谱法排除PB和5-FU间任何可能的相互化学作用。重要结论：联合PB,低剂量5-FU可以在短时间内起到细胞毒作用,而单独应用PB或5-FU治疗较联合治疗可以诱导更多细胞发生凋亡。进一步采用等效线图法分析显示PB和5-Fu的联合作用在抑制结肠癌细胞HT29和HCT116的生长中分别体现出协同和拮抗作用。因此可以认为在HT29细胞中,PB使得较低剂量5-FU发挥最大抑制结肠癌细胞生长效果,然而在HCT116细胞中,PB没有显著降低5-FU的药物浓度,说明PB和5-FU的相互作用不仅仅体现在诱导细胞凋亡方面。  相似文献   

美术圈里的“话语权”     

王冕 《贵阳学院学报(社会科学版)》2014,(2):115-117

中国艺术话语权是中国艺术遭遇西方话语霸权所出现的文艺理论新问题,当代中国美术的“话语权”如何建构,中国绘画要想获得世界范围内的成功,除了高度的敬业精神,更需要“特有样式”,以展现“异域”文化的奇观效果。全球化时代,发展中国家不可回避的便是文化强势国家推行的文化霸权策略,我们的绘画现在已经没有在西方话语权中生存,而是在市场话语权中“被动”生存。在追求“大众化”的进程中,让中国传统的艺术魅力获得回归,从意境的生成中获得当代绘画的全新发展。  相似文献   

以ERG需要理论探索高校流动编制人员管理机制     

李秀花  吴琳娜  方绵 《科教文汇》2015,(19)

本文以中山大学为例,试图通过奥尔德弗生存相互关系、成长需要理论（又叫ERG需要理论）及其相互关系,探索高校流动编制人员生存、相互关系及个人发展现状,以此思考高校在流动编制人员管理机制方面存在的问题。在此基础上,从改善流动编制人员待遇和流动编制人员转为固定编制人员的方式两个角度,提出：满足高校流动编制人员以货币和安全为主要特征的生存需要、以人际关系为主要特征的相互关系需要、以自我实现为主要特征的发展空间需要,是目前解决流动编制人员岗位管理机制方面存在问题的关键,为高校管理者建立有效的激励管理机制提供一定的理论依据和途径。  相似文献   

Academic culture in Malaysia: sources of satisfaction and frustration     

Chang Da Wan  David W. Chapman  Ahmad Nurulazam Md Zain  Sigrid Hutcheson  Molly Lee  Ann E. Austin 《Asia Pacific Education Review》2015,16(4):517-526

  相似文献   

Evaluating student satisfaction of quality at international branch campuses     

Syed Zamberi Ahmad 《Assessment & Evaluation in Higher Education》2015,40(4):488-507

The aim of this research is to present the determinants of students’ perceptions of quality and experience of study at international branch campuses in Malaysia, a country that is set to become an academic hub in Asia. This study used a multi-method approach for data collection. The respondents comprised 245 students (both undergraduate and postgraduate) from six renowned international branch campuses operating in the country – three from Australia, two from the UK and one from India. In addition, a total of 21 face-to-face interviews were conducted after the survey. The results revealed that across the seven dimensions examined concerning education and non-education qualities – university reputation/image, programme quality, lecturers and teaching quality, student learning environment, effective use of technology, counselling and academic advising support, and social life (direct/indirect) facilities – the students were largely satisfied. The paper adds to the existing body of research on higher education service quality, particularly on students’ perceptions and expectations of international branch campuses.  相似文献